Vibrating device



A1182 27, 1929 R. G. RICHARDSON 1,726,192

VIBRATING DEVICE Filed Jan. 1o, 1924 Ilm- HDMI-ley E- Elcharar'sun MME# Patented Aug. 27, 1929.

l nomina?` of.. inermi'Einst-)iaQLonl onfohgo,

A'l\f'y inve iition relates "in general to vibratlingfdevices, and is especiallyjappl'i'cable"to vibrating screens, although itsiise' is l'not'so liniiteil; andthe object is to providenn arranf fenient.'l and means for utilizing the gyro- .f scopic couples generated by vibrating the axis of rotation of a heavy fly wheel or gyro'scope thereby 'producing a powerful and' Aefficient vibrating device. f A I 10,. lOne embodiment of my invention,"in which the .saine 'is'applied to a vibrating screen of the lwell known type used for screening'or grading sand,l gravel, ore, and' like material, is shown in the accompanying drawing, wherein i Fig. 1 shows a top view of a screen equipped with the invention; Fig. 2 showsa side view ofthe same screen; Fig. 3 isa fragmentaryview showing 'a modification of the screen depicted inFigs.

,1 and2; while F ig. 4. is a fragmentary view showinol the application of the gyroscope as an auxiliary vibrator. f .Referring to Figs. land 2. the screen itself may be of any approved type. As shown herein it comprises a rectangular wooden frame about 8 ft. over all in length, and72 ft. in width, with an inner frame of square strips on which a sheet metal or wire mesh orany suitable means. The method of con- '4 and j5 are four "in nuni by" reference jcharacters" lljto 14, inclusive. lThese, springs i and? associated parts aref all alike: Consi'deri'i'ig spring 1' L"and--it`sfrnoiint errandare indicated ing more in detail,-f' th 'centering bolt-l-'its tightly' in a lioleboredin lcrojss piece 7 and is screwed downs-ifi I his ivaslier forms a' A:bearing the cross' piece 5, there beingfa 'yseco'nd'washer cros'sfpi'ece, the hole' being largeenoiighito insure a loose ft'fTheuppen end of the spring-f may or may I'notbe' attached to washer 17. i lf the former, the-- end'offthe '-springi'a'sfibent '-,u

f at riglit angles and extends into=a hole drille struct-ion'is sufficiently indicated'in the dravv- Aing, and since it is well understood'by persons familiar with screens, nov further consideration will be necessary on tliisphase' of* the matter. y

The means for supporting the screen will cross pieces 4" and 5, 4which support the ,i weight of the frame. The cross pieces @and 5 are in turn supported by means of springsl on cross pieces 6 and 7, respectively..l '1 .`l ieV .latter may forni part of some' other machine,

or may he supported'in any preferred man-v piece 6 i's su ported by two uprights, one o ge andthe lower cross piecef 7 fits in a niort-isc about a foot from the left in the washerto receive iti :'As stated before,

theother three springs. and :associated parts are like"ft1i`e f'0ne 'd'escribedn s Thesel springs evidently constitute@ aisloose'. or exible support for theframel'of the'screen, onwhich it screen is stretched and held by staples, cleats,f f.: i L r l j- In order "to""ho'l'dff the' iscreenlin 1'position f is free to vibrate'. "mi i? against theKi tension of the ibelt; '.wliichf-isused .to vdrive the gyros'cope, on vibraton-twoloose or flexible f iconI'iecti'ons'x fare; provided sate the 4upper'jend ofthescren. 2T hese` consistroff two L" shapedbars off iron"34'andf35iwhichfares :bolted 'to the vcross vpiece '6,' and ltwo. similarL now be explained. The sides 2 and?) ofthe frame are attached at opposite" ends Vto the enough 'to make" a` loose t,'sothat the attachlr'nentswill- VnotV 'interfere' withjgthe; vibrations.

ofthe screen'ilgv @r1 vibratefmaynow be considered. This comprises a heavy fly'wvheel for. gyroscope- 1-0,v and f shaft 41, supported 'on-.fself aligningball cated by reference character'l, at such a' height 'that the screen will be inclined at an 55 angle of'about 30 -roxn'the horizontal.

The springs which :support the cross pieces port for' the springe the l'r n"a in`. frame .work 'has a me1nher-2-lsecured' at :the sill 9 and upright 10, and having a block 21 to provide a horizontal, surface to whiclr lie spring brackets'areblted-"as shown-'1in 1e. he spring 47 is adjustable, that"`is,'1neans is provided to change the.tensionI.fori-egulating the natural period of vibration. v This comprises. a perforated block` 48, .which A.may ,beelamped on the springat any desired point, 'a link49,. and.a.bra'cke t 5 1 and. Ub olt .52,f`or

.seeuring'theend ofthe link .tQ-,member 20. -The showing, of these y'parts in, Eig .-2,is-v se lf explanatory, but it may.bepoiritedout,v nevertheless, that if.;A one desires ,to increase,` the cspring tensign, for. instane,'lthe..block x{iS-,is v shifted, upward -on tl1e\sp1 ing,.the.,ll ,bolt 52 beingmoved to the .left .at thesame time.`4

The gyroscope shaftisrotatedby a ,pulley l-xvheelf 54 andl belt 55 ,witlrasmallfmotor (not shown); Anfadjustableweight 5,0is mounted -onthesliaft nexttothe bearing 4 3 in -order 1.. IThe :1operation,is as @toll motor is running",` the gyroscope and'shaftare i revolved at a; hightrate-,os speed, preferably .which;is oii'vcenterywith respect totheshatt,

-causes ,the .bearing 43 E to vibrate onspring-T17.

The vibrations thus p oduced are in Ja hori- :zontal-plane. The accompanyingmovements of .theendofshaft141:setnpQ-gyroscopic 'couplesl which ,tendto lmove the, other endo'f the shaft up'and down,'or ina vertical plane',and

these forcesare :transmitted to thei lscreen -throughe1--bearing42. 'z- Thef-gyroscope thus translates tha-horizontal vibrations of bearing 43 intovertical vibrations'fof bearing 42.

vIt will be understood that the-vibrations are of' small amplitude, and cause ,but slight :l ehangesin ,alignmentfbetween the: shaft andbearings, .whicharereadily-taken' care of by the self-aligning feature of the latteraef'4 L 'The' construction .illustrated g produces v ibrations in a: vertical plane, whichgives excellent' results-in most cases. Vibrations may Vbe produced in la plane-perpendicular=- tothe screen, however, if. desired, yby supporting spring 47 directly on member20 and 4Without t e intervening block 21. As a matter of fact any direction: of vibration desired can readily bef obtained by y mounting the spring 47 in the proper position. For instance,cer tain types o screens or separators are vintended to Avibrate horizontally, tvhich motionV can be secured bygmountingfspring 47- in, a horizontal .position instead of vertical, and| by changing the position of the motor sothat the belt will extend upwardfrom the pulley. With the'pulley mounted adjacent the ,bearing 42, it will tbe understood that f the, belt should berun in a direction which is as nearly.

as possible at right angles to Athe, s ring, 47

in order that the belt 'may not inter ere with the vibrations of the screen. The pulley 54 ows:

nl ayobviouslyr liefplafcfledon the otherend of the shaft if found more convenient, in which psethe belt should run in a direction parallel to the'spring.' "-'f A Thevarious modifications just described in- V`vlve'nothing but adjustment or rearrange- ,I mentof the parts, the principle of operation remaining'the same." lOther modifications are ,possible, hoivever, which produce modified operating results, lalthough still retaining the gyroscopnzY vibratingprinciple. .One ofthese ,isshowninFig 3, wherein the vspring 47 is attached to the frame meinber 'of the screen .itselfinstead of to` therigidframe 'Work on lu'hieh thefscreen is supported. '.A'piece of :angle iron and'V shaped block maybe used for this purpose. Vhen' the: spring is "supportedin, this manner a doublevibration is.y :,produced. The gyroscopevibrates the screen in af vertical, plane,"y as 4formerly', but atl the sametimevthe spring will react againstfits l support an'dcausethe 'screen tovibratejhoriing to which a gyroscope is used to produce an l auxiliary. -v ibratory motionl in a screen A which .,is'gi-venla primary vibrato'ryfmotion by separateA means.` yReferencecharacters 9', v20', and

Eig'. el shows another modification; accord' j3", indicateI parts of a screen support 'andi mounted .on a rigid/ meniber 70', attached to member 9 and 20. lThe other bearing of the e shaft(not shown) isattache-d to the screen @frame as shown in Fig. 1'. Withv this arrangenient, vibrations fof the screen in a horizontal planefwill Vcause the screen bearing ot the gyl roscope to vibrate,andlthe gyroscope, reacting 'against the fixed bearing 43', will set up ,secondary .vibrationsin the' screen in a ver- 4 tical plane.

`Numerous other modifications are "possible fand Ido not therefore wish to be limited to `the constructions.,described herein` but` desire to include and ha\'e protected by Letters Patent. all forms ,of my invention which come .fairly within the scope 0f the appended claims.

What I claimfis'z' f' .l 1. Alvibrating devicefcomprising a Avgyroscope,a bearing for tliegyros'cope shaft'firred i. torthe part tobe .vibrated, asecond bearing independently supp'orted'so as to vibrate 1n only one plane, and means for vibrating the said second bearing.

Q. A vibrating device comprising a gyroscope and shaft, two bearings for said shaft, one fixed to the part to be vibrated and the other independently supported so as to be free to vibrate, and means for vibrating the said second bear-ine.

3. A vibrating device comprising a shaft connected at one end to the part to be vibrated, a gyroscope mounted on said shaft, and means for vibrating the other end of said shaft.

4. A vibrating device comprising a shaft, means for vibrating one end of said shaft, a gyroscope mounted on said shaft, and means for connecting the other end of said shaft to a part which it is desired to vibrate.

5. The. combination with a movable device, of a vibrating member, and a gyroscope for transmitting the vibrations of said member to said device.

6. The combination, with an apparatus to be vibrated. of a vibrating member, a gyroscope and shaft, and means connecting one end of said shaft to said apparatus and the other end to said member.

7. The combination, with an apparatus to be vibrated` of a fly wheel, a shaft supporting said wheel and connected to said apparatus at one end, and means for vibrating the other end of said shaft to set up gyroscopic couples which cause vibrations in said apparatus.

8. The combination, with an apparatus to be vibrated, of a gyroscope, and means for causing the gyroscope to vibrate said apparatus, said means comprising a member vibrating independent of said apparatus, and a mechanical connection between said member and said gyroscopc for causing precession of the g'vroscope.

9. A vibrating device comprising a gyroscope, a shaft supporting said gyroscope, and bearings for said .shaft supported for vibration in non-parallel planes.

10. In combination, a member, means for vibrating said member in a certain plane, a second member adapted to be vibrated responsive to the vibrations of said first member, and translating means comprising a gyroscope intervening between said members whereby said second member is vibrated in a different plane.

11. The combination, with an apparatus to be vibrated. of a gyroscope, a bearing for the gyroseope shaft attached to said apparatus, a spring independently supported with respectto said apparatus. gyroscope shaft attached to the tree end of said spring, and means for vibrating said second bearing.

a second 'bearing for theV 12. In a vibrating device, a gyroscope including a shaft, a spring supporting one bearing for said shaft, the other bearing being attached to the part to be vibrated, means for vibrating said spring and the said first bearing supported thereon, and means for adjustin the frequency of the vibration.

13. n a machine, means for generating centrifugal forces, a member free to move responsive to said forces, means controlled by said member for generating gyroscopic couples, and a second member free to move responsive to said couples.

14:. In combination, a gyroscope, two bear- 75 ings for the gyroscope shaft, means for moving one 'bearing back and forth in a certain iven a reciprocatplane so that the shaft is ing movement about a pivot point passing through the other bearing, and means for confining the movement of the first bearing to said certain plane, whereby the gyroscope reacts against the first bearing and moves the second bearing ina different plane.

15. In combination, a gyroscope, two bearings .for the gyroscope shaft, means for giving the shaft a reciprocating movement about an axis which intersects the shaft, means for substantially confining one bearing to the plane of said reciprocating movement, and an apparatus to which the second bearing imparts a reciprocating movement in a different plane by gyroscopic reaction against the first bearing. y

16. In a machine, a motion translating device comprising a gyrosco e, said gyroscope having a shaft rotating in earings, supporting means for one bearing which prevents movement in one plane while permitting movement in a different plane, means for moving said bearin in the plane in which it is free to move, whereby a couple is generated which moves the other bearing in the. plane as to which the first bearing is immovable, and apparatus to which the translated motion is to be imparted connected to the said other bearing.

17. In a device for producing reciprocating motion, a gyroscope, a device actuated by centrifugal forces for causing periodic precession of the rotating axis of said gyroscope, and means for imparting the gyroscopic couples thus generated to the apparatus in which the reciprocating mot-ion is to be produced.

18. In combination, a movable apparatus, means for generating centrifugal forces, means responsive thereto for generating gyroscopie couples, and means whereby said couples and the reactions against said centrifugal forces produce a compound reciprocating movement of said ap aratus.

RODNEY G. RIHARDSON. 

